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Creator | Title | Description | Subject | Date |
| 51 |
 |
Miller, Jan D.; Niewiadomski, Marcin M.; Hupka, Jan; Nalaskowski, Jakub | Air bubble and oil droplet interactions in centrifugal fields during air-sparged hydrocyclone flotation | The interactions of air bubbles and oil droplets in centrifugal flotation have been considered with respect to process conditions present during Air-sparged Hydrocyclone (ASH) flotation. Encounter efficiency of oil droplets with air bubbles has been found to be significantly smaller when compared t... | Centrifugal flotation; Froth flotation; Oil flotation; Dispersed oil; Air-sparged hydrocyclone; ASH | 2007 |
| 52 |
 |
Miller, Jan D. | Further considerations of magnetic deinking for wastepaper recycling mills | Magnetic de-inking has been shown to be an efficient process for the removal of certain toner particles from mixed office waste (MOW) furnishes. It is possible to achieve a dirt removal of 96% with the WHIMS (wet high intensity magnetic separator) if all toner particles present in the furnish are at... | Magnetic deinking; Paper pulp; Wastepaper; Mixed office waste; (MOW) | 1998 |
| 53 |
 |
Miller, Jan D. | Magnetic separation for wastepaper recycle mills | An alternative approach to the conventional washing and flotation techniques for de-inking of mixed office waste (MOW) is magnetic separation. The use of magnetic de-inking has great potential to improve the efficiency of ink removal due to the magnetic content of toners. It is shown experimen... | Deinking; Paper pulp; Wastepaper; Magnetic separation | 1997 |
| 54 |
 |
Miller, Jan D. | Effect of pH on pulping and flotation of mixed office wastepaper | The effect of pulping reagents on the deinking flotation of laser-printed wastepaper was investigated with regard to the removal efficiency of toner and mineral filler particles at different pH values. These results show that caustic pulping causes the toner to be released from the fibres as larger... | Wastepaper; Deinking; pH values; Pulp production processes | 1999 |
| 55 |
 |
Miller, Jan D. | Multiphase flow characteristics of gas sparged hydrocyclone flotation deinking | A new high-efficiency technology has been developed for flotation deinking of various wastepaper grades. The GSC gas sparged hydrocyclone is a centrifugal device that operates at consistencies of 1 to 3 percent and uses conventional flotation chemistry. Research and development efforts have continue... | Wastepaper; Deinking; Gas sparged hydrocyclone flotation deinking | 1993 |
| 56 |
 |
Miller, Jan D. | Flow phenomena and its impact on air-sparged hydrocyclone flotation of quartz | Fluid flow phenomena and therefore the flotation efficiency of air-sparged hydrocyclone (ASH) flotation are strongly dependent on operating and design variables such as air and slurry flow rates, underflow and overflow opening areas, percent solids of the feed, reagent levels, particle size and ASH... | Quartz; Flotation; Hydrocyclones | 1995 |
| 57 |
 |
Miller, Jan D.; Deo, Milind; Lin, Chen-Luh | Distribution of multiphase fluids in porous media: comparison between lattice Boltzmann modeling and micro-x-ray tomography | A parallel implementation of the three-dimensional Shan-and-Chen multicomponent, multiphase lattice Boltzmann method (LBM) was used to simulate the equilibrium distributions of two immiscible fluids in porous media. The simulations were successfully validated against cone-beam x-ray microtomographi... | Multiphase fluid flow; Porous media; X-ray microtomography | 2008-02 |
| 58 |
 |
Miller, Jan D. | Spectroscopic analysis of passivation reactions for carbonaceous matter from carlin trend ores | Abstract. Three different refractory carbonaceous gold ores from the Carlin operation in northeastern Nevada were investigated to characterize the effect of passivation treatments on the nature of the carbonaceous material. The carbonaceous material was chemically isolated from the ores and pass... | Gold; Chlorine; Cyanidation | 1990 |
| 59 |
 |
Miller, Jan D.; Nalaskowski, Jakub | Flotation chemistry and technology of nonsulfide minerals | The dimensions of nonsulfide flotation technology extend in many directions, as might be expected from the diversity of the mineral classes, which include soluble salt minerals (potash, borax, and trona), semisoluble salt minerals (phosphate minerals, fluorite, calcite, and barite), and insoluble ox... | Flotation; Insoluble collectors; Salt minerals; Nonsulfide minerals | 2007 |
| 60 |
 |
Miller, Jan D. | Hydrophobic character of semisoluble salt minerals with oleate as collector | The effects of temperature, oxygen partial pressure, and solution chemistry can have a significant effect on the hydrophobic character of semisoluble salt minerals with adsorbed oleate. Measurements of bubble-attachment time and contact angle reveal the sensitivity of these hydrophobic surfaces to c... | Flotation; Solution; Oleate | 1984 |
| 61 |
 |
Chandran, Ravi | Near threshold fatigue crack growth behaviour of a high strength steel: the effect of prior austenitic grain size | Near threshold fatigue crack propagation behaviour of a high strength steel under different prior austenitic grain sizes with constant tensile properties was investigated. Attention has been paid to the observation of facture modes at thresh-; old in different grain sizes. The observations indicate ... | High strength steel; Crack growth; Austenitic grain size | 1987 |
| 62 |
 |
Miller, Jan D. | Selectivity considerations in the amine extraction of gold from alkaline cyanide solutions | It has been discovered that gold can be extracted from alkaline cyanide solution with primary, secondary, and tertiary amines by adding certain Lewis base modifiers, such as organic phosphorus oxides. Under these circumstances, gold can be extracted at about pH 10, commensurate with the pH of cyani... | Gold; Amines; Alkaline cyanide; Extraction | 1984 |
| 63 |
 |
Miller, Jan D. | Critical review of wetting and adhesion phenomena in the preparation of polymer-mineral composites | The wetting behavior of liquid polymers at solid surfaces and the adhesion forces involved at polymer-filler interfaces should always be considered in the preparation of high-quality polymer composites, including those made with mineral fillers. Spontaneous polymer spreading over the filler surface... | Polymer-minerals; Composites; Wetting; Adhesion | 1995 |
| 64 |
 |
Miller, Jan D. | Selective flotation of fossil resin from Wasatch Plateau high-volatile bituminous coal | Certain bituminous coals are known to contain appreciable quantities of natural fossil or subfossil resin. Such resinous coals are found in the western US, particularly the Wasatch Plateau coalfield of UT. Some of the seams in this field contain an average of 5% resin. This fossil resin has been r... | Bituminous coal; Wasatch Plateau; Resin | 1989 |
| 65 |
 |
Miller, Jan D. | Mineral processing fundamentals | The reported claims in several Russian articles that magnetic fields change the viscosity and other basic properties of water and as a result produce beneficial effects such as increased flotation rate, improved grades and recovery, and increased settling rates appear to be unfounded. This conclusi... | Minerals; Processing; Magnetic fields; Metallurgy; Water | 1971 |
| 66 |
 |
Chandran, Ravi | Fracture toughness of two Cr2Hf+Cr intermetallic composites as a function temperature | Fracture toughness as a function of temperature was evaluated for two Cr2Hf+Cr intermetallic composites, each in two different microstructural conditions. The proeutectic microstructures based on Cr-6.5Hf (at%) showed a significant increase in fracture toughness with an increase from room temperatur... | Fracture toughness; Fracture resistance; Intermetallic composites; Proeutectic microstructures; Eutectic microstructures | 1994 |
| 67 |
 |
Miller, Jan D. | Anisotropic character of talc surfaces as revealed by streaming potential measurements, atomic force microscopy, molecular dynamics simulations and contact angle measurements | A study of the interfacial properties of the basal plane and the edge surfaces of talc is described in this paper. The isoelectric points measured at two different crystallographic surfaces by the streaming potential method were found to be similar and exist at about pH 3.0. In the case of the edge... | Talc; Interfacial properties; Hydration; Atomic force microscopy; Molecular dynamics simulations; Edge surface; Basal plane | 2007 |
| 68 |
 |
Miller, Jan D. | Experimental evaluation of a mineral exposure model for crushed copper ores | Copper mineral inclusions dispersed in crushed ore particles have a certain size distribution (grain-size distribution). For efficient heap leaching processes, the crushing plant should be designed and operated to crush the ore to an appropriate particle-size distribution so that copper mineral grai... | Grains; Particles; Distribution | 2006 |
| 69 |
 |
Miller, Jan D. | Development and application of centrifugal flotation systems in wastewater treatment | Flotation as a wastewater treatment technique is designed to remove all particles generally encountered as very fine emulsions, suspended solids, and colloids from wastewater. Historically, Dissolved Air Flotation (DAF) has been used to achieve this removal. More recently, other flotation techniques... | Wastewater treatment; Centrifugal flotation; Liquid cyclone mixing; Hybrid centrifugal dissolved-air flotation; ASH; BAF; GEM; FF | 2007 |
| 70 |
 |
Miller, Jan D. | Role of the hydrocarbon chain in anionic flotation of calcite | The response of calcite to flotation with saturated fatty acids and alkyl sulfonates of various chain lengths is presented. The amount of collector required for flotation is shown to decrease systematically with increasing carbon content from 8 to 12-carbon atoms per molecule. This systematic flot... | Hydrocarbon chain; Calcite; pH (Chemistry); Carbon | 1967 |
| 71 |
 |
Miller, Jan D. | Internal reflection spectroscopy for FTIR analysis of carboxylate adsorption by semi-soluble salt minerals | Flotation chemists have long sought to unravel the mechanisms of carboxylate collector adsorption by semi-soluble salt minerals. In particular, the adsorption density of adsorbed carboxylates, adsorption kinetics, speciation (chemisorbed, physisorbed), orientation, and conformation are of interest.... | Carboxylate collector adsorption; Salt minerals; Internal reflection spectroscopy | 1999 |
| 72 |
 |
Miller, Jan D. | Conformation of chemisorbed oleate at a calcite surface | The surface chemistry of the calcite/oleate flotation system was examined by in situ FT-NIR/IRS. Spectra of combination and overtone bands of aliphatic stretching vibrations revealed gauche/trans conformational changes that occurred solely as a function of temperature. The conformational changes wer... | Chemisorption; Oleate; Calcite; Gauche/trans conformation; Rotational isomerism | 2001 |
| 73 |
 |
Miller, Jan D. | Influence of surfactants on interaction forces between polyethylene surfaces in a hydrocarbon solvent | The polyolefins, mainly polyethylene and polypropylene particles, are used as an active filler material in polymer-polymer blends and are being used for the modification of asphalts to provide for high-load, low-maintenance road construction. The stability of prepared blends depends on the interact... | Surfactants; Asphalt; Polymer; Polyolefins | 2003 |
| 74 |
 |
Miller, Jan D. | Surfactant adsorption density calculation from Fourier transform infrared external reflection spectroscopy (FTIR/ERS) | An equation to calculate surfactant adsorption density from Fourier transform infrared external reflection spectra was established. The derivation and limitation of this equation are discussed in detail. The validation of the FTIR/ERS adsorption density equation was experimentally verified from t... | Surfactant; Adsorption density; Solid film | 2003 |
| 75 |
 |
Miller, Jan D.; Lin, Chen-Luh | Development of a PC, image-based, on-line particle size analyzer | A PC, image-based, on-line instrument for measuring coarse particle size on a conveyor belt is under development. The hardware and software required to implement such a system are discussed, including the interface for the special image-acquisition hardware. The system concept is given with exampl... | | 1993 |
